Outdoor Fastener Manufacturer
Justwintec is an outdoor fastener manufacturer in China, supplying corrosion-resistant screws, bolts, rivets, pins and custom fasteners for tents, marine equipment, solar mounting systems, wind power structures, fences and outdoor applications.
Corrosion-Resistant Fasteners for Outdoor Applications
Outdoor fasteners are exposed to rain, humidity, salt spray and harsh weather conditions. We provide reliable corrosion protection through optimized material selection and surface treatments, helping reduce rust issues, maintenance costs and premature replacement.
For different outdoor applications, our fasteners can achieve salt spray resistance from 72 hours to 1000 hours, including zinc plating, zinc-aluminum coating, dacromet, 304 and 316 stainless steel solutions.
We offer a range of significant benefits:
01. Long-Lasting Corrosion Protection for Outdoor Environments
Outdoor fasteners are exposed to rain, humidity, UV radiation, salt spray and changing weather conditions. Ordinary carbon steel fasteners may quickly develop rust, surface discoloration and reduced strength, affecting the service life of outdoor equipment.
We provide customized corrosion-resistant solutions based on different application environments, from standard zinc plating to marine-grade stainless steel.
Our fasteners can achieve salt spray resistance from 72 hours to 1000 hours, helping reduce rust problems, maintenance frequency and replacement costs.
How we achieve it:
- Select suitable materials according to the application environment
- Provide zinc plating, color zinc, black zinc, Dacromet and zinc-aluminum coatings
- Offer SS304 and SS316 stainless steel options for harsh environments
- Control coating adhesion and surface quality during production
- Arrange salt spray testing according to customer requirements
- Provide inspection reports for batch traceability
Suitable applications include:
- Camping tents
- Marine equipment
- Solar mounting systems
- Wind power structures
- Fences
- Outdoor umbrellas
02. Material Selection for Different Outdoor Conditions
Different outdoor applications require different levels of corrosion resistance. Using unsuitable materials may lead to premature rust, reduced strength and increased maintenance costs.
We help customers select the right fastener material based on exposure conditions, service life requirements and cost targets.
Available solutions:
| Surface Treatment | Description | Salt Spray Resistance |
|---|---|---|
| Zinc Plated Carbon Steel Fasteners | Suitable for general outdoor applications requiring basic corrosion protection. | ≥72–96 hours |
| Color Zinc / Black Zinc Fasteners | Provides improved corrosion protection with enhanced surface appearance. | ≥120–168 hours |
| Dacromet / Zinc-Aluminum Coated Fasteners | Designed for stronger outdoor corrosion resistance and long-term protection. | ≥240–480 hours |
| 304 Stainless Steel Fasteners | Suitable for humid and outdoor environments requiring good corrosion resistance. | ≥200–400 hours |
| Zinc-Nickel Alloy Coated Fasteners | Designed for automotive chassis, photovoltaic mounting systems and outdoor applications requiring high corrosion resistance. | 600–1000 hours |
| 316 Stainless Steel Fasteners | Designed for marine, coastal and solar applications requiring higher corrosion resistance. | 800–1000 hours |
03. Stable Performance Under Outdoor Loads
Outdoor fasteners are often exposed to vibration, wind loads, temperature changes and repeated installation or adjustment. Fasteners must maintain reliable strength while resisting environmental stress.
How we achieve it:
- Control material quality before production
- Inspect critical dimensions including diameter, length and thread accuracy
- Verify tooling condition during mass production
- Check thread fit with gauges
- Control heat treatment and mechanical performance when required
- Conduct final inspection before shipment
This helps reduce:
- Loose connections
- Fastener deformation
- Structural instability
- Installation problems
- Premature replacement
04. Reliable Supply for Outdoor Equipment Manufacturers
- Batch-controlled raw material management
Raw materials come with MTC documents, batch classified storage, spectral & hardness sampling test to avoid raw material mixing. - Stable production processes
Locked production parameters; standardized die replacement schedule to avoid dimension deviation in long mass runs. - First-piece inspection before mass production
Full measurement validation for first article; production starts only after QC approval. - In-process dimensional checks
Hourly sampling inspection on dimensions, thread and appearance during manufacturing. - Surface treatment inspection
Check coating thickness, adhesion and surface quality after plating & finishing. - Salt spray testing when required
Periodic salt spray lab tests for anti-corrosion demands; formal test reports available.
All batches feature complete traceability, guarantee consistent quality for large-volume orders
Why Choose Us
Core Manufacturing & Service Advantages
Stable production, flexible customization and clear order follow-up help you control quality, cost and delivery.
Over 30 years of manufacturing experience and technical knowledge, with practical guidance for product development and production.
More than 80 Taiwan-imported production machines support a monthly capacity of over 150 tons.
Factory advantage: 10,000㎡ self-owned factory, direct manufacturer, cost & lead time controllable.
Quality is controlled from raw material inspection and production to packing and shipment.
6 years of export experience, supporting quotations, samples, documentation, customs clearance and shipping.
We have served over 2,000 companies, including more than 50 customers who have worked with us for over 20 years.
We can support OEM/ODM customized development, new product trial production.
Whole-process order follow-up: update production schedule & QC inspection photos regularly, guarantee on-time delivery and inform any unexpected issues timely. Products with quality issues can be returned and replaced as needed.
Large quantity orders can be customized with packaging and logos as per requirements.
Leading Custom Fastener Manufacturer In China
Shenzhen Justwin Technology Co., Ltd. serves as the exclusive export division of Zhongshan Shenghong Machinery Technology Co., Ltd,which is established in 1993 and is a fastener company that integrates product research and development, sales and services.
Our integrated manufacturing base is equipped with complete production lines, a standardized quality control system and a professional technical team. We adopt unified standards in production management, quality inspection and R&D.
We specialize in the global supply of fasteners, hardware parts and customized mechanical components. Backed by integrated factory operations, we offer genuine factory-direct pricing, consistent and sufficient supply, as well as efficient, standardized one-stop export services.
We strive to deliver high-quality products and thoughtful international trade support for global clients, aiming to establish long-term, stable and win-win partnerships worldwide.
30+ Years of Fastener Manufacturing Experience
With more than 30 years of production and product development experience, we understand the requirements of standard fasteners, special fasteners and OEM projects.
High Quality
Technology
Sustainability
Our complete production lines allow us to arrange both small trial orders and large-volume production.
We support growing companies with flexible custom fastener development and negotiable MOQs based on the product and process.
We inspect each stage from incoming materials and production to surface treatment, packing and shipment.
Production and inspection are managed according to ISO 9001 procedures. Factory inspection reports can be provided, and third-party testing can be arranged when required.
Standard items in stock normally ship within 3–7 days. Rush orders can receive priority scheduling to help meet your shipment plan.
Custom fasteners and molded parts normally ship within 15–30 days, depending on product complexity.
OUR FACTORY
Fastener Manufacturing Facilities
Our 10,000+ m² self-owned factory is equipped with more than 80 production machines, supporting stable production for screws, rivets, pins and custom fasteners.
CUSTOM PRODUCTION PROCESS
From Your Drawing to Finished Fasteners
We manage each step from material inspection and tooling to batch production, testing, plating and final shipment.
01. Raw Material Inspection
02. 3D Product Design
03. Mold Development
04. Sample Approval
05. Mass Production
06. Electroplating
07. Multiple Quality Inspections
08. Salt Spray Testing
09. Packing and Shipping
QUALITY & COMPLIANCE
Certificates and Test Reports for Buyer Review
Relevant quality and compliance documents can be provided based on the product, material, surface finish and destination market.
ISO 9001 Quality Management System
EN 71-3 Material Safety Testing
REACH Chemical Compliance
RoHS Restricted Substance Compliance
Client Testimonial
What that say about Justwintec
Other Questions
FAQs
Yes. We manufacture custom screws, rivets, bolts, nuts, pins and special fasteners based on your drawing or sample.
Small trial orders are available. MOQ depends on the material, size, process and tooling requirements.
Mold development normally takes 7–15 working days.
Minor mold adjustments for sample improvement can usually be made without an additional charge. Major structural changes will be quoted separately.
Common materials include:
- Carbon steel
- 40Cr alloy steel
- Stainless steel SS304 and SS316
- Stainless steel A2 and A4
- Brass
- Aluminum
- Titanium
Other materials can be discussed according to your application.
Available surface treatments include:
- Zinc plating
- Black oxide
- Dacromet
- Nickel plating
- Chrome plating
- Zinc-nickel alloy coating
For zinc-plated products, salt spray resistance can be customized from approximately 48 to 500 hours depending on the coating system and project requirements.
Standard items in stock normally ship within 3–7 days.
Custom molded products normally require 15–30 days after sample confirmation.
Yes. We support OEM-branded packaging, custom logos and neutral export packaging.
Please provide:
- Drawing or sample
- Material
- Surface treatment
- Order quantity
- Required tolerance
- Target standard
The more complete the information, the faster we can provide an accurate quotation.
Yes. We can assist with export documentation, customs clearance and worldwide FCL or LCL shipment arrangements.
Send us a message
Feel Free to Reach Out for Further Details.
Looking for reliable fastener solutions? Justwintec is here to support your project with professional service, fast response, and stable factory supply.